JP2002364178A - Material lifting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a material lifting device capable of lifting a variety of materials while keeping them in a predetermined attitude, and capable of directly conveying the lifted material to a desired site without bringing a crane into contact with, if any, an obstacle protruding sideways above the site where the material lifted should be conveyed. SOLUTION: The material lifting device includes a horizontal member 14 capable of being lifted by a crane 13; a retaining means 15 rotatably attached to one end of the horizontal member 14 for detachably gripping materials 10; an attitude adjusting means 16 provided between the horizontal member 14 and the retaining means 15 for adjusting the lifted attitude of the material 10 by rotating the retaining means 15 by a predetermined angle; and a balance weight 17 attached to the other end of the horizontal member 14 for keeping the horizontal member 14 horizontal. When the horizontal member 14 is lifted by the crane 13, the horizontal distance L between the center W of gravity of the overall material lifting device 1 and the retaining means 15 is equal to or greater than a predetermined distance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material lifting device, and more particularly to a material lifting device suitable for attaching an outer wall exterior plate to an inclined wall surface, a wall under an eaves, or a wall under an eave.

[0002]

2. Description of the Related Art Conventionally, when an exterior wall exterior panel such as a precast concrete board is mounted on a wall of a building or the like, first, a work scaffold and an exterior wall exterior panel are temporarily placed near a place where the exterior wall exterior panel is to be installed. It was common to set up a temporary storage place, lift the exterior wall exterior plate with a crane or the like, temporarily place it in the temporary storage place, and then adjust the posture of the exterior wall exterior plate on the temporary storage place before mounting it on the wall.

[0003]

However, the conventional method of placing the exterior wall cladding panel in a temporary storage space, adjusting its posture, and then attaching it to the wall requires a temporary storage space for the exterior wall cladding panel and a working scaffold. Since the posture of the outer wall exterior plate must be manually adjusted, there is a problem that equipment costs and man-hours increase, resulting in an increase in cost.

[0004] In the conventional method, a wire rope is used to lift the outer wall cladding with a crane. However, the outer wall cladding is conveyed at a relatively low place on a sloping upper wall, under an eave or under an eave. Above the place to be
When there is an obstacle protruding to the side, the wire rope of the crane comes into contact with the obstacle, so that the outer wall exterior plate may not be able to be transported to a target place.

In this case, it is necessary to perform a troublesome operation such as bringing the outer wall cladding plate as close as possible to the target place and pulling in the outer wall cladding plate from the building using a drawing jig.

[0006] Such a problem is not limited to the case where the outer wall exterior plate is lifted, but also occurs when lifting various materials.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem. Various objects can be lifted while holding them in a predetermined posture, and a place where the lifted materials should be conveyed. A technology for providing a material lifting device capable of transporting a lifted material to a target location without bringing a lifting device such as a crane into contact with the obstacle even when there is an obstacle protruding laterally upward. Subject.

[0008]

SUMMARY OF THE INVENTION The present invention is a material lifting device, and is configured as follows to solve the above-mentioned technical problem. That is, the present invention is a material lifting device for lifting a material while holding the material in a predetermined posture, and a horizontal member that can be lifted by a lifting device, and one end of the horizontal member for detachably holding the material. A holding means rotatably mounted on the holding member, and a posture adjustment provided between the horizontal member and the holding means for adjusting the lifting posture of the material by rotating the holding means by a predetermined angle. Means, and a balance weight attached to the other end of the horizontal member to hold the horizontal member horizontally, when the horizontal member is lifted, the center of gravity of the entire material lifting device and the holding means The horizontal interval is equal to or larger than a certain dimension.

Further, in the material lifting apparatus according to the present invention, the material is an outer wall exterior plate attached to an outer wall of a building, the balance weight is movably attached to the horizontal member, and an inclination sensor is attached to the horizontal member. Is attached, and the balance weight moves based on the detection result of the tilt sensor.

Next, each component of the present invention will be described. (Horizontal member) A certain length is required in order to make the horizontal distance between the center of gravity of the entire apparatus and the holding means equal to or more than a certain dimension, and the width is equal to or more than a certain amount in order to mount a balance weight, a control device, and the like. In order to stably hold materials to be lifted, balance weights, control devices, and the like, a certain rigidity and strength are required.

As such a horizontal member, a member formed in a rectangular frame shape by combining H-shaped steel having high rigidity and strength can be exemplified. (Holding Means) The configuration of a base member slightly larger than the material in order to hold the material stably, and gripping means provided above and below the base member to grip the material removably from above and below can be exemplified. A hydraulic cylinder can be used as the holding means. (Attitude Adjusting Means) The attitude of the holding means is adjusted by rotating the holding means by a predetermined angle, and a hydraulic cylinder which presses the upper or lower side of the rotation center of the holding means can be exemplified.

According to the present invention, the posture of the suspended material can be easily adjusted by rotating the holding means. Therefore, the suspended material is temporarily placed in a temporary storage place as in the prior art, and then the posture is changed. No manual adjustment is required.

Further, since the horizontal distance between the center of gravity of the entire apparatus and the holding means is equal to or larger than a predetermined dimension, for example, when a horizontal member is lifted by a crane, the wire rope of the crane is disposed directly above the center of gravity. The horizontal distance between the wire rope and the material on the holding means also becomes a certain dimension or more. Therefore, even when there is an obstacle protruding laterally above the place where the material should be transported, the lifted material can be directly transported to the target location without bringing the wire rope of the crane into contact with the obstacle. .

Further, since the balance weight moves based on the detection result of the inclination sensor attached to the horizontal member,
The horizontal member can always be horizontal.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a material lifting device according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a view showing a material lifting apparatus 1 according to the present invention. The material lifting device 1 lifts various materials while maintaining them in a predetermined posture. In the present embodiment, a case where the outer wall exterior plate 10 is lifted as a material will be described.

Further, in this embodiment, the inclined wall surface 12 of the building 11 is widened upward, and the outer wall cladding plate 10 is attached to a relatively low place of the inclined wall surface 12.
The case where the outer wall exterior plate 10 is lifted in a posture suitable for attachment will be described.

The material lifting device 1 is a horizontal member 1 that can be lifted by, for example, a crane (lifting device) 13.
4 and a holding means 15 rotatably attached to one end of a horizontal member 14 for detachably holding the outer wall cladding plate 10.
A hydraulic cylinder 16 serving as an attitude adjusting means provided between the horizontal member 14 and the holding means 15 for adjusting the lifting attitude of the outer wall exterior plate 10, and a horizontal member 14 for always keeping the horizontal member 14 horizontal And a balance weight 17 attached to the other end of the balance.

On the horizontal member 14, hydraulic cylinders 16, 27, 35,
A hydraulic unit 18 for controlling the hydraulic unit 40 and an electric motor 19 for driving the hydraulic unit 18 are mounted. The hydraulic unit 18 and the electric motor 19 are controlled by a remote control operation.

Further, in the material lifting device 1, when the horizontal member 14 is lifted, the horizontal distance L between the center of gravity W of the entire device and the holding means 15 is determined by the inclination angle of the inclined wall surface 12 and other conditions. Accordingly, the size is set to be equal to or larger than a predetermined size determined in advance.

Next, each component described above will be described. When the horizontal member 14 is lifted, it is necessary to make the length relatively long so that the horizontal distance L between the center of gravity W of the entire material lifting device 1 and the holding means 15 is equal to or larger than a certain dimension. is there.

Further, since the balance weight 17, the hydraulic unit 18, the electric motor 19 and the like are mounted on the horizontal member 14, a certain space is required. Furthermore, in order to stably lift each of the mounted devices, the holding means 15 attached to one end of the horizontal member 14, and the outer wall cladding plate 10 held by the holding means 15,
It is necessary to increase rigidity and strength.

Therefore, as shown in FIG. 2, the horizontal member 14 is formed in a rectangular frame shape by combining an H-shaped steel 20 having high rigidity and strength. That is, the horizontal member 14 includes two long H-shaped steel members 20 arranged in parallel with an appropriate interval therebetween, and
Several places of 0 and 20 are connected by a short H-shaped steel 21.

A square pedestal 22 is attached to one end (the right end in FIG. 2) of the horizontal member 14. The holding means 1 is attached to the pedestal 22 via two hinges 23, 23.
5 is attached. Thereby, the holding means 15
Are rotatable in the vertical direction in FIG.

Rails 24, 24 are attached to the end of the horizontal member 14 opposite to the holding means 15. The balance weight 17 described above is movably mounted on these rails 24, 24. Rail 24,
As shown in FIG. 1, stoppers 25, 2
6 are provided. A hydraulic cylinder 27 is mounted between the rails 24 to move the balance weight 17.

At the approximate center of the horizontal member 14, the tilt sensor 2
8 is attached. Based on the detection result of the inclination sensor 28, the hydraulic unit 18 and the hydraulic cylinder 27
Operates, and the balance weight 17 moves in a direction to keep the horizontal member 14 horizontal.

On both sides of the center of gravity W of the horizontal member 14,
Locking members 29, 29 for hooking the wire rope 30 for lifting are provided. When the center of the wire rope 30 is hung on the hook 13a of the crane 13 and lifted, the horizontal member 14 becomes horizontal and the wire rope 20 of the crane 13 comes directly above the center of gravity W.

The holding means 15 shown in FIG. 1 includes a base member 31 slightly larger than the outer wall exterior plate 10 for stably holding the outer wall exterior plate 10 and a base member 31 for detachably holding the outer wall exterior plate 10 from above and below. And holding means 32 and 33 provided above and below 31.

As shown in FIG. 3, the base member 31 is formed in a quadrangular frame shape by combining appropriate shaped steel members vertically and horizontally. Gripping means 3
The reference numerals 2 and 33 are attached to the left and right sides of the base member 31, respectively.

As shown in FIG. 4, the upper holding means 32 includes a hydraulic cylinder 35 attached to the upper end of the base member 31 and extending and contracting downward.
L-shaped holding member 3 attached to a piston
6 and a pressing member 3 for pressing the outer wall exterior plate 10 against the base member 31 to prevent rattling thereof.
6 and a biasing member 37 attached to the control member 6.

As shown in FIG. 5, the lower gripping means 33 shown in FIG. 1 is rotatably mounted on the base member 31 and has a hydraulic cylinder 40 which expands and contracts in the thickness direction of the base member 31.
A guide member 41 substantially parallel to the hydraulic cylinder 40 and attached to the base member 31;
And a rod-shaped support member 42 connected at one end to the piston of the hydraulic cylinder 40. At the free end of the support member 42, the outer wall cladding 1
A hook 43 that can be locked is provided at the lower end of the “0”.

Next, the operation of the material lifting device 1 will be described. As shown in FIG.
When the material lifting device 1 is to be hung by the material lifting device 1 to be attached to the inclined wall 12, the material lifting device 1 is slightly lifted from the floor surface or is placed on the floor surface before the outer wall exterior plate 10 is mounted.

At this time, the holding member 36 of the upper gripping means 32 of the holding means 15 is pulled upward, and the hook 43 of the support member 42 of the lower gripping means 33 is separated from the surface of the base member 31 as much as possible. deep.

Next, after the lower end of the outer wall cladding plate 10 is placed on the support member 42 of the lower gripping means 33 of the holding means 15, the outer wall cladding plate 10 leans against the base member 31. Next, while lowering the upper holding member 36,
The hook 43 is pulled back to grip the upper and lower ends of the outer wall cladding panel 10. Thereby, the outer wall cladding plate 10 can be securely held.

After the outer wall plate 10 is mounted on the holding means 15, the hydraulic cylinders 16, 16 serving as attitude adjusting means are operated to adjust the attitude of the holding means 15 to match the inclined wall surface 12. Thereby, the outer wall exterior plate 10 can be attached to the inclined wall surface 12 in a posture in which it is suspended.

If the horizontal member 14 is tilted due to a loss of balance when the outer wall cladding plate 10 is mounted, the tilt sensor 38 detects the tilt of the horizontal member 14 and, based on the detection result, the hydraulic cylinder 27 operates to move the balance weight 17 to the higher side of the horizontal member 14. As a result, the overall balance is maintained, and the horizontal member 14 becomes horizontal.

Next, the crane 13 is operated to lift the material lifting device 1 to a predetermined height. Subsequently, the material lifting device 1 is moved by the operation of the crane 13 to the inclined wall surface 12.
The outer wall exterior plate 10 is conveyed to a predetermined position on the inclined wall surface 12 by being horizontally moved to the side. Then, the outer wall exterior plate 10 is temporarily fixed to the inclined wall surface 12, and the upper and lower gripping means 32, 33 are opened. Thereafter, the outer wall exterior plate 10 is fixed to the inclined wall surface by a regular method. Similarly, the remaining outer wall cladding plate 10 can be attached to the inclined wall surface 12.

When the material lifting device 1 is being lifted by the crane 13, the horizontal member 14 is always horizontal, and the wire rope 20 of the crane 13 is disposed immediately above the center of gravity W.

At this time, the distance L between the center of gravity W and the holding means 15 in the horizontal direction is equal to or more than a certain dimension, so that the distance between the wire rope 20 and the holding means 15 is also equal to or more than a certain dimension.
Therefore, the degree of inclination of the inclined wall surface 12 and the outer wall exterior plate 10
Considering the height of the place where the
Is set to an appropriate size, the wire rope 20 of the crane 13 is connected to the most protruding portion 1 of the inclined wall surface 12.
The outer wall cladding plate 10 can be directly conveyed to the destination without contacting the outer cladding 2a (FIG. 1).

Further, when the outer wall cladding plate 10 is removed from the holding means 15, the balance of the material lifting device 1 is lost, and the horizontal member 14 is inclined with the balance weight 17 being on the lower side. Then, the inclination sensor 28 detects the inclination of the horizontal member 14, and the balance weight 17 moves to a higher side by a predetermined distance. Thereby, the material lifting device 1
Is maintained, and the horizontal member 14 becomes horizontal.

As described above, the material lifting device 1 of the present invention
According to the above, by rotating the holding means 15, the posture of the suspended outer wall cladding plate 10 can be easily adjusted, so that the suspended outer wall cladding plate 10 is once placed in the temporary storage place as in the related art. There is no need to manually adjust the posture. Therefore, equipment costs such as temporary storage and scaffolding and labor costs can be reduced, and costs can be reduced.
Since the outer wall exterior plate 10 can be directly transported to a predetermined position on the inclined wall surface 12 without making contact with the upper projecting portion 12a, a special jig for drawing from the building 11 side as in the related art can be used. This eliminates the need for the operation of taking in the outer wall exterior plate 10 by using, and can reduce the number of operation steps.

Further, since the balance weight 17 is moved based on the detection result of the inclination sensor 28,
The horizontal member 14 can always be horizontal, and work safety can be improved.

In the above embodiment, the outer wall cladding 1
Although the case where 0 is lifted has been described, the present invention is not limited to this, and can be applied to a case where various materials are lifted.

[0044]

As described above, according to the present invention,
Since the posture of the suspended material can be easily adjusted, there is no need to manually place the suspended material as in the past, and then manually adjust the posture. The cost and man-hour for adjusting the posture can be reduced, and the cost can be reduced.

Further, since the horizontal distance between the center of gravity of the entire apparatus and the holding means is equal to or larger than a predetermined dimension, even if there is an obstacle protruding laterally above the place where the material is to be transported, the lifting apparatus is used. Can be transported directly to the specified location without contacting obstacles with obstacles, and it is not necessary to take in materials from the building side using a special drawing jig or the like as before, Work man-hours can be reduced.

Further, since the balance weight is moved based on the detection result of the inclination sensor attached to the horizontal member, the horizontal member can always be horizontal, and the safety of work can be improved.

[Brief description of the drawings]

FIG. 1 is a view showing a material lifting device according to the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

FIG. 4 is a view taken in the direction of arrow C in FIG. 1;

FIG. 5 is an enlarged view showing a posture adjusting means according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Material lifting apparatus 10 Exterior wall exterior board (material) 13 Crane (lifting apparatus) 14 Horizontal member 15 Holding means 16 Hydraulic cylinder (posture adjustment means) 17 Balance weight 28 Tilt sensor W Center of gravity

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ryoji Aoyama 2-10-26 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Industry Co., Ltd. Within Construction Industry Co., Ltd.

Claims (3)

[Claims] 1. A material lifting device for lifting a material while holding it in a predetermined posture, comprising: a horizontal member capable of being lifted by a lifting device; and one end of the horizontal member for detachably gripping the material. Holding means rotatably mounted, by rotating the holding means by a predetermined angle,
An attitude adjusting means provided between the horizontal member and the holding means for adjusting a lifting attitude of the material; and an attitude adjusting means attached to the other end of the horizontal member for holding the horizontal member horizontally. And a balance weight, wherein when the horizontal member is lifted by the lifting device, a horizontal distance between the center of gravity of the entire material lifting device and the holding means is equal to or larger than a predetermined dimension. . 2. The material lifting device according to claim 1, wherein the material is an outer wall exterior plate attached to an outer wall of a building. 3. The balance weight is movably attached to the horizontal member, an inclination sensor is attached to the horizontal member, and the balance weight moves based on a detection result of the inclination sensor. The material lifting device according to claim 1.